"Most heart disease is preventable (and even reversible) through diet, and Harper recently talked in an interview about having eggs every day and rotisserie chicken for dinner," another person added. "Maybe he'll wise up after this and go back to being plant-based."

"If this heart attack was caused by clogged arteries instead of an infection, then it was 100% preventable and 100% his fault," chimed in another. "Low carb diets, like the one he USED to promote, probably caught up with him."

Some agreed with Harper that it was simply genetics.

"He is a male and over 45 and has a history of heart disease in his family so he has three risk factors that cannot be changed," said another man. "The genetic component is the most difficult to overcome even with exercise and diet."